Lamp socket



Aug. 11 1931.

G. H'. GLADEQJR 1,818,614

LAMP SOCKET Filed July 18. 1927 F 2 f' 'U51 zjl f4/B543 1 IRT/6721507" YPatented Aug. 11,` 1931 'f UNITED srA'rns PATENT. omen Gnomiz' n. Grans,in., or cnicaeo, ILLINOIS i uur socxm 'application med .my is,

This invention relates to an electric socket. It has for one object, toprovide a socket which is substantially unbreakable. Another object isto provide a socket which may be assembled b hand without the use oftools. Another object is to provide a socket in which tension cannotcome upon the individual wires so that undue strain does not fall uponthem when the light is in use or carried about from place to place.Another object is to provide in a socket of the type described, means'for readily fastening a clamping and guarding device to the exterior ofthe socket. Other objects will appear '16 `irene time to time throughoutthe specification and claims.

This inventionis illustrated more or less diagrammatically in theaccompanying drawings, wherein: f m .Figure l is a side elevation withparts.

broken away.

Figure 2 is a longitudinal cross-section on an enlarged scale. l vFigure 3 is a transverse cross-section taken $5 on a line 3-3 of Figure2. v

Figure'e is a similar transverse crosssection taken on line 4--4 of Fiure 2.

Figure 5 is a partial lon 'tu inal crosssection taken on line 5-5 yoFigure 4. l0 Figure 6 is a view generally similar to Figure 2 with partsomitted and showing a modified form. p y

Fi ure 7 is a perspective view of the adjusta le endVw-all or lug. lLike arts are designated by like char' acters t roughout.

A is' a tubular member which in the form here shown serves both as thecontainer for the socket and wiring parts, and for the c insulator. Itis provided on its exterior with a relatively small Aannular groove A1and a larger roove A2. `'A1 is a shoulder. vWithin the t` a pair ofchannels A", As l are provided. .These terminate in shoulders l A4.There are thus left between the channels A3 slightly raised portions orlands A5. Adjacent one end of the tube is\the internal annular groove orde ression A.

B is a socket mein er provided with the D relatively/enlargedend portionB1 and car- 1927. Serial No. 206,514.

rying a socket portion B1. As shown espe-v cially in Figures 3 and 4,the member B, B1 is'provided with cut-away portions Bf in its sides,within which wiring connectionsl B4 are positioned. The portions of themem 55 bers B, B2`and the shape and -arran ement ofthecut-away portionsB8 is such t at the raised portions A of the tube A fit into thecut-away portions B3 of the member Bv and thus preventing lateraltwisting or rotation of this' part.

,C is a lu adapted to fit within one 4end of the tuge and to lie closeto the groove or depression A". C1 is a spring ring which is fitted intothe groove or depression A6; 65l when the plug C is in position and whenso assembled, the lug is held Vagainst accidental outward displacement.C2 is a central perforation in the plu C through which the lightingcable or conduit C8 may pene- 70 trate. f

vD, D are clamping parts adapted to be held to ether by screws D1, D1.hey are -fitted a out the inner end of the cible Ca yso as to grip ittightly. The clamp or 76 abutment D normally bears against the in-v nerface of the plug C and thus when the lamp is carried by the cable, asfrequently happens, any strain which comes upon the cable either throughthe weight of the lamp 80 itself, or for any other reason, is carried,not by the inner conductin member C4, nor by small set screws B* w ichfasten it' to the socket but by the cable and cable casing Cs 'as awhole, clampedby the clamp D, D 85 which bears against the inner `faceof the plu screw.

is a spring ring. adapted to fit into the groove or depression A1. Aboutit a base F may be positioned" as shown particularly 90 in Figures l and2. This base embraces the outer end of Athe tube A and engages the ringE. The base F may carry as here shown, a ca e F1 which serves as aprotection for the ight.

Gis a gripping part assembly held in the depression A2 by a screw, G1.This gripping part may be attached to -a clamp and handle or other partby means of which the light may be used, positioned ,or adjusted. 10

The details of this apparatus form no part of the present invention andare therefore not shown in detail.

The interior diameter of the tube A is preferably provided with, orformed so as to have two dimensions. This appears articularly in Figure5,' the channels A ing formed vin the smaller part of the tube.

There is shown in Figure 6, a modified `form in which the interior ofthe tube A is threaded. A threaded plug H is 'provided to close the endof the tube A and to hold the parts in position. it has a hole H1 whichis preferably located centrally and may also be providedwith a slot H2for a screw-driver or 'other tool by means of which it is screwed intoor out of position. Byv thus providing thesocket container or tube Awith a screw-threaded plug or end'v -wish-.my description and drawingsto be taken vin a sense diagrammatic.

I claim: `1. In `combination in an electric light socket, a socket partprovided with means for receiving the base of an electric lamp, and alsorovided with means to which conductors rom a power source may beattached, a combined insulatin and handle member surrounding the soc etpart and shaped to conform thereto, the socket and handle being providedwith interitting parts to prevent relative rotation, a removable closureplug for the handle member, a conduit extending into the handle throughthe plug and containing conductors the ends of which are attached to thesocket member, au abutment carried by the conduit between the lug andsocket member, and means for ad lusting the plug longitudinally of thehandle into enga ement with-the abutment to position the a utment withinthe handle to prevent' longitudinal movement of the socket member.

. 2. In combination in an electric light socket, a socket part andacontaining part tached about said conductor to be engaged andoperatively positioned within the containing part by said adjustableclosure memv ber. v

3. In combination, an electric li ht socket, a containin part enclosingthe soc et, a conduitl exten ing within the containin part and includingconductors to be attache to the socket, and an abutment removablyattached to the conduit adjacent to the socket member, the socketcontainin part including a movable end wall adjusta ly mounted thereinand movable into engagement with thel abutment to o eratively positionthe same v within the soc et contamer.

4. In combination, an electric li ht socket, a containin part enclosingthe soc et, a conduit exten ing within the containin and includingconductors to be attac ed to the socket, and an abutment removablyattached to the conduit adjacent to the socket member, the socketcontaining part including a movable end wall, cooperative means betweentheJ end wall and the socket containin part permitting relativelongitudinal .adJustment of the end wall therein, whereb to move the endwall into engagement wit the abutment.

5. In combination, an electric li ht socket, an insulating handleenclosing t e socket, the handle including an adjustable end wall, aconduit extending within the handle through the end `Wall and containingconductors attached to the socket, an abutment l removably secured tothe conduit between the end wall and socket, Ethe end wail and handlebeing tio-operatively screw-threaded to permit relative adjustmentthereof whereby the end wali may be moved into engagement with theabutment to operatively position the same with respect to the socket.

Signed at Chicago, county oi' @ook and State of lllinois, this lith dayoi? July,

GERGE H. GLADE, da.

enclosing said socket part and having an' open rear end, an adjustableclosure for said containing part, a conduit extending within thecontaining part and containin a conductor adapted to be attached to saidsocket member, and anv abutment removably at part

